Android secret codes which can actually open a new world of smartphone computing

Introduction :

Android also offers several secret codes, which can actually open a new world of smartphone computing for you. These codes are usually a sequence of numbers and symbols and meant to be entered through the usual phone dial pad which you usually use for inputting numbers before placing a call.
Following are the secret codes for you. Please read the subsequent result before trying them out, since a few codes are meant to wipe your entire system, pressing which you can lose your valuable data.

The android secret codes :

*#*#4636#*#*

Display information about Phone, Battery and Usage statistics

*#*#7780#*#*

Resetting your phone to factory state-Only deletes application data and applications

*2767*3855#

It's a complete wiping of your mobile also it reinstalls the phones firmware

*#*#34971539#*#*

Shows completes information about the camera

*#*#7594#*#*

Changing the power button behavior-Enables direct poweroff once the code enabled

*#*#273283*255*663282*#*#*

For a quick backup to all your media files

*#*#197328640#*#*

Enabling test mode for service activity

*#*#232339#*#* OR *#*#526#*#*

Wireless Lan Tests

*#*#232338#*#*

Displays Wi-Fi Mac-address

*#*#1472365#*#*

For a quick GPS test

*#*#1575#*#*

A Different type GPS test

*#*#0283#*#*

Packet Loopback test

*#*#0*#*#* 

LCD display test

*#*#0673#*#* OR *#*#0289#*#* 

Audio test

*#*#0842#*#*

Vibration and Backlight test

*#*#2663#*#*

Displays touch-screen version

*#*#2664#*#* 

Touch-Screen test

*#*#0588#*#* 

Proximity sensor test

*#*#3264#*#* 

Ram version

*#*#232331#*#* 

Bluetooth test

*#*#232337#*#*

Displays bluetooth device address

*#*#8255#*#*

For Google Talk service monitoring

*#*#4986*2650468#*#*

PDA, Phone, Hardware, RF Call Date firmware info

*#*#1234#*#*

PDA and Phone firmware info

*#*#1111#*#*

FTA Software version

*#*#2222#*#*

FTA Hardware verion

*#*#44336#*#*

Displays Build time and change list number

*#06#

Displsys IMEI number

*#*#8351#*#*

Enables voice dialing logging mode

*#*#8350#*#*

Disables voice dialing logging mode

Source : Usenext